id:A077815 - OEIS Search Results

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2^phi(n) mod n^2, where phi=A000010 (Euler's totient).

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0, 2, 4, 4, 16, 4, 15, 16, 64, 16, 56, 16, 40, 64, 31, 0, 222, 64, 58, 256, 127, 56, 392, 256, 451, 40, 433, 176, 30, 256, 187, 0, 958, 800, 841, 208, 38, 780, 586, 1536, 944, 568, 1076, 1200, 91, 392, 2069, 1024, 2157, 1076, 1021, 1600, 1909, 2620, 826, 2752 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`a(42) = 2^phi(42) mod 4242 = 2^phi(237) mod 1764 = 2^(42(1-1/2)(1-1/3)(1-1/7)) mod 1764 = 2^12 mod 1764 = 4096 mod 1764 = 568.`
	CROSSREFS	`Cf. A077816, A000010, A000290.` `Sequence in context: A154987 A089419 A145891 this_sequence A064449 A117291 A079102` `Adjacent sequences: A077812 A077813 A077814 this_sequence A077816 A077817 A077818`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Nov 17 2002`

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Last modified March 9 00:15 EST 2010. Contains 173097 sequences.

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